TDoubleAIMuniScan by TDoubleAI Inc.
Desktop site feasibility & drainage evidence · rural Ontario

Can I add a second unit to my property?

Six legal-size sheets your designer can build from. Done from the desk, so nobody needs to come onto your lot.

  1. 1Site & Zoning
  2. 2Terrain & Drainage
  3. 3Features & Servicing
  4. 4Second Unit
  5. 5The Answer
  6. 6Make It Specific

New: Drainage & Change Evidence. Water coming from next door after a neighbour regraded or filled a ditch? See what changed and when, from provincial lidar and aerial photos. From a real case →

Independent service. Not affiliated with any township, county or conservation authority.

Sheet 6 of 6, Make It Specific Sheet 5 of 6, The Answer Sheet 4 of 6, Second Unit Sheet 3 of 6, Features & Servicing Sheet 2 of 6, Terrain & Drainage Sheet 1 of 6, Site & Zoning
Sample · Beckwith lot · 6 sheets · legal 14 × 8.5
Legal 14 × 8.5, prints at 100%Every finding rated H / M / LBy-law sections cited5 business daysNo site visit neededDrainage & change evidence

What's under your lot?

Free Ground Read. Type your address or tap your lot. We pull data from trusted sources within 500 m of your lot and tell you what licensed drillers found.

Ground Read · 500 m around your lotFree · no sign-up
Search an address or tap the map. You'll get three lines: how deep the rock is, what the wells are like, and anything the drillers flagged.
Get the full Suite Check · $295

From MECP driller records, not a test on your lot. Recorded well locations can be off by up to 300 m, so we confirm your well location with you before we finish your report. Planning use only.

How it works

Four steps. You only fill in one page.

STEP 1

Send the address

We map the lot from provincial lidar, recent aerial imagery, the zoning by-law and driller records.

STEP 2

Confirm one page

Two minutes. Tick our guesses, mark your septic tank, bed, well and the planned suite, and OK us to pull your septic permit file.

STEP 3

Get your report

The approval route, septic flow and upgrade trigger, and where the suite fits, built on your layout.

STEP 4

Take it to the Township

Your report ends with the permit path: which offices to file with, what each one asks for, and the questions to bring to a pre-consultation.

Confirm Your Site map: aerial photo of the lot with lot lines, a 10 m grid, two numbered raised mounds and a numbered well record
STEP 2 · CONFIRM YOUR SITE · 1:900 ON LEGAL PAPER

Lidar sees bumps. You know what they are.

The elevation data shows raised ground, but it can't tell a septic bed from landscaping fill. On our own test lot it picked the wrong mound. So before we finish, you check our guesses and mark the map:

  • TSeptic tank lids
  • BSeptic bed, outlined, even if we didn't flag it
  • WWell
  • SPlanned suite or building
  • XWet spots, buried lines, rock
Your marks are labelled "owner-confirmed" in the report. That is good enough for planning. A design still needs the tank and bed located on site.

What you get

  • Approval routeInside the house, addition or separate building, and which permits each one takes
  • Zoning checkYards, height, lot coverage, parking and entrance rules for your zone
  • Septic numbersYour daily flow today and with the suite, tank size, whether an upgrade is triggered, and a clear-or-close check on your well-to-bed distance
  • Where it fitsA map of the addition zone and the best open ground, clear of the septic bed and well
  • Ground & waterSlopes, drainage and wet spots. Depth to rock, clay and water table from the well logs. Depth, yield and water quality of nearby wells, and whether your well can carry a second unit
  • Permit pathWhich offices to file with (Township building and planning, the septic office, the conservation authority, the road authority), what each one asks for, the order to file in, and the questions to bring
Second Unit sheet map: the house, a yellow addition zone, green open ground for a detached unit, the owner-marked septic bed with its 6 m ring, the well, and buried gas and Bell/hydro lines
SHEET 4 · WHERE A SECOND UNIT FITS · 1:1250

What it's built on

Every source we can legally use: provincial lidar and every aerial photo year, your township's by-law, driller records and plans on file, checked against what you tell us. Every sheet rates how sure we are and lists its sources.

Terrain
Ontario lidar 2019–22, 0.5 m grid where flown. Tested to 14.7 cm vertical on our Beckwith lot
Imagery
Provincial DRAPE aerial photos (2024 on our sample lot)
Zoning
Township zoning by-law and recent council decisions
Septic rules
Ontario Building Code, Part 8 and Article 11.4.2.5
Water
MECP driller records: every log within about 500 m, cleaned and mapped
Natural features
Wetlands, watercourses and conservation-authority mapping
Records
Subdivision and lot grading plans, permits and registry documents, cited by number and date
Weather & geodesy
Environment Canada rainfall records and NRCan elevation and control data
Your evidence
Your photos, video and screenshots, shown as client-supplied exhibits with their dates

See the full sample report

Five legal-size report sheets and the free fill-in form, from a real Beckwith lot. Use the arrows, the numbers or your keyboard.

Sheet 1 of 6, Site & Zoning: Lot lines fitted to the lidar road corridors, zoning yards, building envelopes, owner marks and the mapped stream, on 2024 aerial imagery.
Sheet 1 of 6Site & ZoningLot lines fitted to the lidar road corridors, zoning yards, building envelopes, owner marks and the mapped stream, on 2024 aerial imagery.
New · Drainage & Change Evidence · $495 + HST

Water coming from next door?

When a neighbour regrades, fills a ditch or builds something and the problems start on your side, the first question is what changed and when. Provincial lidar and aerial photos have been recording your street for years. We line them up against the approved lot grading plan and show it on legal-size sheets the Township can check. Get the evidence first, before the letters start.

  • Grading & ditchesRear-lot swales, ditches and culverts that were filled, raised or blocked, and where the water used to go
  • Fill & earthworksRaised pads, berms, stockpiles and fill, with volumes once the ground is measured
  • When it changedSheds, additions, pools, fences, driveways and tree clearing, dated between provincial photo years
  • HeightsFence, berm, hedge and building heights from the lidar, against the zoning limit
  • Well & septicA neighbour's new bed or tank against your well, checked against Building Code separations
  • Against the planYour subdivision's approved lot grading plan against what the ground actually did
What it doesn't do. It doesn't locate the property line (that's an Ontario Land Surveyor), say who is at fault, or give an engineering or legal opinion. It's a neutral record of measured facts and dates that you, the Township, an engineer or a lawyer can use. Nobody goes onto the neighbour's property.

How it works

  • 1 · Tell usThe address, what happened, roughly when, and any dated photos you have
  • 2 · The recordWe pull every lidar and aerial photo year for your street, the grading plan and any permits on record
  • 3 · The sheetsA timeline sheet (before, during, now) and a profile along the drainage line, with design grades, in about 5 business days
  • 4 · MeasuredAn RTK site visit adds today's ground to the same profile; that's what shows how much was raised
Sample sheet 1: 2021–22 lidar and 2024 provincial photo of four rear yards, with the flow paths, the rear swale, and the point where the flow enters the graded lot
SAMPLE SHEET 1 · TIMELINE · BEFORE, DURING, NOW
Sample sheet 2: profile along the rear lot line showing the 2021–22 swale bottom against the approved plan grades, with the graded reach marked
SAMPLE SHEET 2 · SWALE PROFILE · YOUR RTK LINE GOES HERE

A real case: provincial lidar and photos from a Lanark County subdivision. Addresses removed, all photos blurred. Click a sheet to open it full size.

Lawyers, paralegals and surveyors: how the evidence is built →

Need something measured with RTK GNSS? We're booking RTK mapping: septic tanks and beds, wells, grades, driveways, locate marks, existing structures and any other features of interest, for owners, designers, builders and septic installers. Not lot lines; those stay with an Ontario Land Surveyor. Tell us about your job: pick "RTK GNSS mapping: I'm interested" on the order form and Trevor will get back to you.

Pricing

Start with the free Ground Read. Order the Suite Check when you're ready. All three reports are done from the desk.

Start here

Suite Check

$295 + HST

You confirm one page, then get three report sheets: the second-unit route, septic numbers with a well-to-bed check, and where it fits on your lot. 5 business days.

For bigger plans

Full Build Feasibility

$595 + HST

Five report sheets plus a free fill-in form. Adds zoning for garages, shops, sheds, bunkies, tiny homes, backyard offices, pools and additions, plus terrain, drainage and natural features. See the sample

Neighbour problems

Drainage & Change Evidence

$495 + HST

Timeline and drainage-profile sheets showing what changed next door and when, against the approved grading plan. Desktop, 5 business days. More

Spring 2027

RTK Site Visit

Booking now

Measured locations of the tank, bed, well, grades and located buried lines, for your designer or septic installer. Tell us about your job on the order form and Trevor will get back to you. More

Trevor Affleck
Who does this

Trevor Affleck, A.Sc.T.

I live in Beckwith and have spent 25+ years in Ontario construction layout, legal surveys and municipal infrastructure mapping. I'm a certified technologist with OACETT, and I work with GNSS/RTK and total stations every day.

MuniScan answers one question: can I build it on my lot? A suite, a garage, a tiny home, a bunkie, a shop or a second house. The answer is usually already on record. It takes someone who knows where to look, checks it against your lot, and tells you straight.

Lanark County: Beckwith · Carleton Place · Drummond/North Elmsley · Lanark Highlands · Mississippi Mills · Montague · Perth · Smiths Falls · Tay Valley
Renfrew County: Arnprior · McNab/Braeside · Renfrew
Leeds & Grenville: Athens · Elizabethtown-Kitley · Merrickville-Wolford · North Grenville · Rideau Lakes · Westport

Questions people ask

Is this a survey?

Not sure if you need a surveyor? No. A Suite Check is a desktop screening for planning. It does not set or confirm property lines; that needs an Ontario Land Surveyor. The RTK site visit (back in spring 2027) measures features and heights for design, not boundaries.

What about a tiny home, bunkie, shop or backyard office?

We check those too. Each township treats them differently, and the label matters. A tiny home someone lives in is usually a second dwelling or a garden suite, and some by-laws treat it as an RV that can't be lived in year-round. A bunkie is usually a sleep cabin, and in some townships you can't have a sleep cabin and a second unit on the same lot. A shed, shop or office is an accessory building with size, height and yard limits; a home office with clients may also fall under home-business rules. The Full Build report tells you which bucket yours falls in and what it takes.

Don't the new Ontario housing rules let me add a unit anywhere?

Not quite. Ontario's as-of-right rules (Planning Act s. 35.1 and O. Reg. 462/24) cover lots in a town or village on municipal water and sewer. On those lots the Township must allow up to three units, can't set a minimum unit size, can't ask for more than one parking space per extra unit, and must allow at least 45% lot coverage. Most rural lots on a well and septic aren't covered, so the Township's own by-law decides. Farm lots have their own provincial allowance. Your report tells you which set of rules applies to your lot. Bill 139 (2026) proposes four units on serviced lots, but it isn't law yet.

How long does it take?

About 5 business days after you return the one-page confirm map. Send it back the same day and you'll have your report within a week.

How exact are the distances?

They're planning distances, not measurements. Your marks, the aerial photo and the parcel map can each be off by a few metres. So we don't call a clearance pass or fail: we call it looks clear, too close to call, or likely too close. Anything close gets checked on site before you design.

How accurate is the free Ground Read?

It's a summary of what licensed well drillers recorded near you, so it's a good first guess, not a measurement. Older records are placed by lot and concession and can be a few hundred metres off, and drillers describe soil in their own words. A Suite Check looks at the individual records and your lot's terrain. We confirm your well location with you before any report is finished.

Where does the information come from?

Every source we can legally use for your lot: Ontario lidar (2019–22, depending on area), every provincial DRAPE aerial photo year, your township's zoning by-law and recent council decisions, MECP driller records, subdivision and lot grading plans and permits, provincial wetland and watercourse mapping, Environment Canada weather records, NRCan elevation data and the Ontario Building Code. Plus what you tell us and your own dated photos. Each sheet lists its sources and licences; measurements come only from data we're licensed to measure from or from our own RTK mapping.

Can you help with a drainage or grading problem with my neighbour?

Yes, with facts. The Drainage & Change Evidence report shows what the ground and the lot looked like before and after, when the change happened, and how it compares with the approved grading plan. We don't locate property lines (that's an Ontario Land Surveyor), decide who's at fault, or give a legal or engineering opinion, and we don't go onto the neighbour's property. Get the evidence first. Before letters, lawyers or a knock on the neighbour's door, get the facts on paper: what changed, when, and how it compares with the approved grading plan. Then take it to the Township; their staff can check every number. If it goes further, your lawyer and engineer start from evidence instead of a story.

What if the Township sees it differently?

The Township, septic office and conservation authority always have the final say. The report shows the by-law sections and sources we used, and ends with the questions to ask them, so a pre-consultation goes faster.

Do you need to come onto my property?

No. The Suite Check and Full Build Feasibility are done from the desk, using public data and the one-page map you mark up. RTK site visits return in spring 2027 for owners who want measured positions before they design.

Are there any savings or programs?

Development charges: a second or third unit in a house, or one unit in a garage or coach house, is exempt from development charges on any lot where a house is allowed, rural lots included (Development Charges Act s. 2(3.2)–(3.3)). Building and septic permit fees still apply. Federal tax credit: if the unit is for a related adult who is 65+ or has a disability, the Multigenerational Home Renovation Tax Credit is 15% of up to $50,000 in costs. Financing: CMHC-insured refinancing can go up to 90% of the finished value when you add units. Ask your accountant and lender what fits you. The federal $80,000 secondary suite loan was announced but cancelled before it opened.

My township isn't listed. Can you still help?

Maybe. Pick "Somewhere else" on the order form or call 613-219-0288. If we haven't worked through your township's by-law yet, we'll tell you before you pay.

Will my details be shared?

No. Your address and answers are used only to prepare your report. See the privacy page.

Order

Send the address and what you have in mind. Within two business days you'll get the one-page confirm map and an invoice by email. Nothing is charged until you approve it, and no payment is taken on this site.

Prefer to talk? Call or text 613-219-0288.